Campbell made the comments in an interview Thursday at her alma mater, the London School of Economics.
"Their (the Conservative party's) positions are too socially conservative, I think, to form a government in Canada," said Campbell about the Jan. 23 election. "People may like their fiscal policies but they're frightened by their social conservatism...It's a pity because it denies people a choice on policy issues."
Campbell served as the first female justice minister and defence minister before becoming prime minister after Brian Mulroney stepped down as party leader.
Kim Campbell (AP file photo)
But she only held the post for just more than four months after calling an election in 1993, when the Progressive Conservative party was reduced to two seats in the House of Commons. Campbell lost her own Vancouver seat and she retired from politics.
She was later appointed to a four-year term as consul general of Canada in Los Angeles.
Campbell teaches in the United States and is currently the secretary general of the Club of Madrid, an organization of former heads of government and former heads of state who work to promote democracy.
